There is no difference in spring height between sport and non sport. I believe the s tune drops the car by 1/4 inch. Honestly, if you're only going to drop the car by 1/2 inch you probably won't see the difference. I've got about 1 inch drop all around on coilovers.
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2010 k23
H&R sport springs / Spc rear camber arms / SSR SP1 / Berk cbe / Varis cf lip / Nismo S-Tune side skirts
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